MUSCLES ENGAGED Shoulders The shoulder is the most movable joint in the body. However, it is an unstable joint because of the range of motion allowed. This instability increases the likelihood of joint injury, often leading to a degenerative process in which tissues break down and no longer function well. Obliques Many people put a lot of focus on working their abs but forget their surrounding neighbors; the oblique muscles. Obliques serve as stabilizers, and are used in almost every physical activity. Exercising your obliques should be a very important part of your workout program. Equipment Used Dumbbells The dumbbell, a type of free weight, is a piece of equipment used in weight training. It can be used individually or in pairs (one for each hand). Dumbbells vary in weight from 3lbs. up to 150lbs. Bosu The BOSU balance trainer stands for "Both Sides Utilized" and is most often used for balance training, various athletic drills and aerobic activities. Exercise Instructions Step 1 Start in a side plank position with your forearm placed across the Bosu and your shoulder lined up over top of your elbow. Keep your hips up high, your obliques tight and hold the dumbbell in your hand at the side of your hip. Step 2 Raise the dumbbell up until it is line with your shoulders. Make sure you keep your hips high and your core engaged throughout the whole range of motion. Step 3 Lower the dumbbell back down to the side of your hip and repeat making sure to keep your hips elevated throughout the entire exercise.